永磁电涡流阻尼新技术及其在土木工程中的应用

针对永磁电涡流阻尼减振的理论与技术进展进行了综述，主要包括：永磁电涡流调谐质量减振器、大吨位的滚珠丝杠式轴向电涡流阻尼器等新型减振装置；板式电涡流阻尼及滚珠丝杠式电涡流阻尼器的性能仿真与设计方法；桥梁涡激共振、斜拉索振动控制的电涡流阻尼三元减振理论；以及基于电涡流阻尼力非线性特性的减震性能研究。介绍了湖南大学新建的大型阻尼器特性综合试验平台及主要功能，以及永磁电涡流阻尼技术的典型工程应用。最后指出了值得进一步研究的若干问题。

Technological Innovations in Eddy Current Damping and Its Application in Civil Engineering

The paper presents a summary review of the theoretical and technical innovations of eddy current damping (ECD) technology. The main contents include: ① development of two kinds of eddy current dampers, namely eddy current tuned mass dampers (EC-TMD) and ball-screw-based axial eddy current dampers with large output force; ② development and validation of the linear/nonlinear mathematical models for eddy current damping forces of EC-TMD and axial ECD; ③ vibration control of stay cables and bridge deck subjected to VIV with inerter-based damping devices, and seismic control of SDOF system considering nonlinear damping forces of axial ECD. The main function of newly built large-scale test platform for eddy current dampers is briefly described; A few typical examples of engineering applications of the ECD technology are also introduced. At last, some topics deserving further research are highlighted.